The 600 single wall cup becomes the ultimate cookset when combined with our Snow Peak hotlips. Now, you can cook your liquids directly over your stove and drink it while it's still hot. Simply heat up water in your 600 Mug and when the water is hot attach the HotLips and enjoy your nice warm beverage. For the ultimate lightweight setup, stow a stove and 110G fuel together in Titanium 600 Mug. The HotLips are also designed to fit securely on the Trek 900 and Trek 1400.